Add scala runner

scala/.gitignore

@@ -0,0 +1 @@
+project

scala/build.sbt

@@ -5,3 +5,5 @@ version := "1.0"
 scalaVersion := "2.10.2"
 
 libraryDependencies += "org.scalatest" % "scalatest_2.10" % "2.0"
+
+mainClass in (Compile, run) := Some("com.gildedrose.Runner")

scala/src/main/scala/com/gildedrose/Runner.scala

@@ -0,0 +1,43 @@
+package com.gildedrose
+
+import java.io.IOException
+import java.nio.charset.StandardCharsets
+import java.nio.file.{Files, Paths}
+
+import scala.collection.JavaConverters._
+
+object Runner {
+  def main(args: Array[String]): Unit = {
+    System.out.println(args(0))
+    if (args.length < 2) {
+      System.out.println("Please pass in and out file args")
+      System.exit(1)
+    }
+
+    val inFile = args(0)
+    val outFile = args(1)
+
+    System.out.println("Reading from: " + inFile + ".  Writing to: " + outFile)
+
+    val items = Files.lines(Paths.get(inFile)).iterator().asScala
+      .filter(s => !(s.isEmpty || s.startsWith(";")))
+      .map(s => {
+        val Array(name, sellIn, quality) = s.split("__")
+        new Item(name, sellIn.toInt, quality.toInt)
+      })
+
+    val gildedRose = new GildedRose(items.toArray)
+    gildedRose.updateQuality()
+
+    val outString = gildedRose.items.map(i => Array(i.name, i.sellIn, i.quality).mkString("__")).mkString("\n")
+
+    try {
+      Files.write(Paths.get(outFile), outString.getBytes(StandardCharsets.US_ASCII))
+    } catch {
+      case e: IOException => {
+        System.out.println("Error writing outfile: " + outFile)
+        System.exit(1)
+      }
+    }
+  }
+}